First, let me say that I'm going to say some really stupid things since I'm a beginner. I apologize in advance, and thank you for any help you can provide. I'm trying to make some titanium wedding rings. I've got a small 7x12'' Grizzly lathe (tried to find a southbend locally, without success). I was finally able to cut a piece off yesterday, after I flipped my tool the right side up.. So now that I've got a little experience with the parting bit, I'm trying to bore the interior of the ring, so I can set it up for boring tools. I haven't had any success, and the lathe keeps stopping, which leads me to believe I'm doing something really wrong. I'm running the lathe at about 150 rpms, and pushing the tool in about .025 mm every few seconds. Is there something I should change? Any help you can provide is much appreciated.